Stirrup nozzle



Nov. 18, 1952 F. WQWAHLIN STIRRUP NOZZLE Filed March 18. 1949 PatentedNov. 18, 1952 S'l-IRRUP N OZZLE Fred W. Walilihflak' Park, Ill.,assignor to Spraying Systems G01, Ghicago', I1l.,-a' corporation: of:

Illinois Application March 18, 1949 ,v SerialiNo. 82351 Claims.

'My invention relates to a stirrup nozzle for pipes and has referencemore particularly to facilities'fo'r securing the nozzle onto the pipe;

Frequently it is desirable to fasten one or more spray nozzles on alength of pipe or tubing at selectedplaces therea-long ina manner to communicatefiuidfrom the pipe'tothe nozzles. Preferably suchnozzles' shouldbe readily and quickly attachable to plain tubing in a secure and leakproof manner without any special or diflicult operation in preparationof the pipe for the at tachment; I

The" principal objects of" my invention are to provide new and improvedfacilities for attaching nozzles of the above mentionedtype; to simplifythe attachment of such nozzles; and to insure secure attachment and;sealing without special precautions; these and other objects beingaccomplished as hereinafter pointed out and" as shown in theaccompanying drawing in which- Fig. 1 is a side'view of a nozzleattached'to a short section of tubing in accordance with my inyen'tion;

2' is an enlarged view on the line 22' of Fig. 1';

-' Fig. 3 is a; fragmentary view of the nozzle on the-line3-3 of Fig; 2;and

Fig; 4- is'a' sectionalview' like that of Fig. 2, but showing amodifiedform of nozzle;

Referring to the drawing, the reference nuineral i indicates the pipe ortubing on which the nozzle is attached, which pipe or tubingmay be" ofany standard type, and H indicates the nozzle as a whole which is:attached to the pipe.

This nozzle fl, as shown more particularly in Fig; 2, comprises atubularn'ozzlebody i2 having an opening 9 therethrough' which leadsoutwardly-irom" the side of the pipe Ill, and said nozzle body" I Z'isprovided at the end thereof next to the pipe with a loop or stirrupextension l3 which encircles the pipe, it being understood that said endof the nozzle body conforms" to the contour of the pipe and togetherwith the stirrup l3- provides complete encirclement therefor; Thestirtop opening is made only slightly larger than the particular size ofpipe on which it is to be used so' that itwill' slip endwise on the pipequite readily but without any'cons'id'erable play. At the stirrup.end'thereof the nozzle body 12 is internally threaded 'atIM toaccommodate a threadedpl'ug' i5 which has a reduced outer end portion["6 and; the pipe" ID" is provided with an opening I? through the sidewall thereof to receive the reduced outer end [6' of the plug l5 asshown in Figs; 2" and 3. Betweenthe enlarged threaded endofthe plug I5and the reduced outer end [6 2 thereof the plugis formed with an annularshoul den 18 to accommodate a packing ringer gasket l9 which is locatedinthe end of the nozzle body opening 9 and clamped between theshoulderlB of the plug [5 and the margin of the opening- H of the pipeso as to seal said opening FIE Be cause of the curvature of the'surfaceof the-pipe Hi this gasket i9 is relatively thick sotha-t when clampedagainst the curved surface of the'pi'peit will compress suiiicie'ntly atthe'sides oftheo'pening IT as shown in Fig. 2 as well as at the sides ofsaid opening as shown in Fig. 3 and insure thorough sealing entirelyaroundsaidopening.

The plug has'an opening 26 therethrough to aiford communication from theinterior Of' 'l7l '18 pipe ill to the interior. of the nozzle body I?and the outer endoi this opening within the threaded portion of the plugis enlarged and'of hexagonal form as indicated at 2'!" to accommodatea'hex rod wrench therein.

Wrench access is hadto the plug 15 through the outer end of the opening9" which. is normally closed by an orifice plug or' nozzle tip 23. whichhas a spray orifice 'extending therethrough and is' detachably securedto' the. outer end. ofth'e body I2 in any convenient manner, as forexample, by an internally threaded shell or'gland'nut 24 which engagesexternal threads on the outer end of the nozzle body, as shown.

Preferably the outer end of the nozzle body f2 is enlarged, as indicatedat 2'2 and the outer end of the opening 9 accordingly enlarged, asshown, to accommodate concavo-convex strainer 2'6'I1aving a marginalsealing gasket 2"! which: is clamped between the plug or tip 23 and the.outer end of the nozzle body as shown in Fig. 2.

With the above construction the nozzle maybe attached to a pipe at anyselected place therealong bymerely drilling an opening'fl' through theside wall of the pipe and. removingthebin-rs from the outer end of theopening. Thenv the nozzle end closure 23 and fl and strainer Gil-lavingbeen removed and the plug [5 having been retracted sufficiently, orcompletely withdrawn, the pipe ID is slipped'through thestirrup B' untilthe drilled opening l! thereof is opposite the threaded openin it of thenozzle body. Then the plug [5 with sealing ring or gasketw thereon isinserted in the threaded opening. M and turned down with awrenchinserted inthe wrench opening 21 until the gasket [9' isfirmlycom!- pressed all the way around against the marginof the tube openingIT, and as the reducedend I6 is then engaged in said tube opening thenozzle is secured firmly in place on the pipe;

After' the nozzle body has thus been secured in place on th pipe thestrainer and cap 23, 24 are secured in place and the nozzle is thenready for use.

In the modified form of nozzle which is shown in Fig. 4, the nozzle body28 thereof is also tubular and has a stirrup 29 at one end whichencircles the pipe Ill, and an end closure at the other end consistingof an orificed plug or tip 30 (like the plug or tip 23 of Fig. 2) whichis likewise secured on the nozzle body 28 by an internally threadedcoupling nut 3| which engages the externally threaded outer end of thebody 28.

The nozzle body 28 is elongated to receive a cylindrical screen assembly32 which has an annular flange 33 at the outer end which is clamped bythe coupling nut 3| between the nozzle tip 30 and the outer end of thebody 28. This screen assembly may be of any desired construction, as forexample, such as shown in my application Serial No. 81,288, filed March14, 1949, whereby the liquid is caused to pass through the cylindricalscreen thereof in flowing from the interior of the nozzle body 28 to theorifice 34 of the nozzle tip.

At its end next to the pipe 10, the nozzle body 28 is internallythreaded, as shown, for threaded engagement therewith of the outerenlarged and externally threaded end 35 of a nipple 3B which projectsthrough the pipe hole I! for securing the nozzle in place thereon.

This nipple is provided with a screw driver notch 31 at the enlarged end35 for turning it in place and has a thick gasket 38 under the enlargedend 35 for sealing engagement with the pipe 10 around the hole ll.

These nozzles of the present invention are usually arranged to dischargedownwardly from the pipe l0 as shown in the drawing, and the nipple 36is of sufficient length to project a substantial distance upwardly inthe interior of the pipe l0 so that any sediment in the pipe willdeposit below the upper end of the nipple 36 and thus will not becommunicated through the nipple 36 to the nozzle.

The pipes [0 on which nozzles of the above described types are mountedare not always of exact size and to accommodate inaccuracies of size,the opening through the stirrup 29 is made sufficiently large to freelyreceive oversize pipes of the particular pipe size for which the nozzleis intended. Such enlargement of the opening ialso permits the nozzle tobe more readily applied on the pipe. To compensate for the enlargementof the stirrup opening, the stirrup 29 is provided, at the side thereofopposite the nozzle 28, with a threaded opening therethrough for a setscrew 39, preferably of screw driver type, by which the pipe It! may beclamped against the opposite Side of the stirrup opening, as shown, foreffective sealing engagement of the gasket 38 thereagainst.

As in the nozzle construction of Figs. 1, 2 and 3, the nozzle endclosure 30 and 3| and the strainer assembly 32 are removed in applyingthe nozzle of Fig. 4 on the pipe Ill. The nipple 36 and its gasket 38are also removed and the set screw 39 retracted so that it does notproject in the stirrup opening.

The nozzle 28 is then slid onto the pipe Hi to a position in which theopening at the inner end of the body 28 registers with the pipe openingII, in which position the nipple 36 is inserted but only sufiiciently toprevent movement of the nozzle from this position. Then the set screw 39is adjusted until the pipe In is held thereby against the opposite sideof the stirrup opening, after which the nipple 36 is turned downsufficiently to compress the gasket 38 tightly around the outer end ofthe pipe opening I! and thereby seal the opening and lock the nozzlesecurely in place on the pipe in. Thereafter the strainer assembly 32and nozzle tip 30 are placed in position and secured in place by thecoupling nut 3|.

While I have shown and described my invention in a preferred form, I amaware that various changes and modifications may be made therein withoutdeparting from the principles of my invention, the scope of which is tobe determined by the appended claims.

I claim as my invention:

1. A spray nozzle assembly detachably securable on the side of a roundpipe having a nozzle supply hole through its side wall, said assemblycomprising a holder with an opening therethrough, a spray tip memberthrough which the nozzle spray is discharged outward at one end of saidopening, and a pipe insert member which is encircled by a gasket ofcompressible sealing material and has one end thereof projecting partWay into said opening at the other end thereof and has a pipe insertportion extending outwardly through the latter end of said opening andterminating therebeyond, both of said members being supported by theholder and each having a passageway therethrough substantiallyconcentric with the opening and leading respectively into the interiorof the assembly and intercommunicating therein with one another, saidholder being provided with a pipe receiver in which the pipe isdetachably securable and a part, at least, of which constitutes a seatof concave cross section extending crosswise of the opening at the pipeinsert member end thereof and facing outwardly therefrom to accommodatethe pipe sidewise therein in a position in which the outwardly extendingpipe insert portion of the pipe insert member projects through thenozzle supply hole of the pipe and the gasket thereon is held in the endof the opening, said pipe insert portion of the pipe insert memberhaving therearound within the opening an annular gasket seat extendingsubstantially radially outwardly to the surrounding wall of the openingand which provides within the end of said opening an annular cavitywhich has an outer margin conforming to the rounded cross section of thepipe and within which cavity the gasket is compressible against the wallof the pipe in the pipe receiver seat, said assembly having threadedmeans by which relative adjustment is eii'ected of said gasket seat andthe pipe in said pipe receiver seat for compressing the gaskettherebetween in said cavity.

2. A spray nozzle assembly detachably securable on the side of a roundpipe which has a nozzle supply hole through its side wall, said assemblycomprising a holder with an opening therethrough which is internallythreaded at one end, a pipe insert member which has one end thereofprojecting into the internally threaded end of said opening and providedtherein with an enlargement which has a surrounding margin and has thepipe insert portion of the pipe insert member inset centrally from saidsurrounding margin thereof and extending outwardly through saidinternally threaded end of said opening and terminating therebeyond, andprovided with an annular gasket of compressible material thereon,

a spray tip member which is removably secured to said holder and closesthe other end of said opening, each of said members having a passagewaytherethrough substantially concentric with the opening and leadingrespectively into the opening to a place of inter-communication with oneanother between said members, said holder being provided with a pipereceiver in which the pipe is securable and a part, at least, of whichconstitutes a seat of concave cross section extending crosswise of theopening at the threaded end thereof and facing outwardly therefrom toaccommodate the pipe sidewise therein with the pipe insert portion ofthe pipe insert member projecting into the pipe through the nozzlesupply hole thereof and the gasket thereon held in the end of theopening, said pipe insert portion having at its inner end an annulargasket seat therearound which is within the threaded end of the holderopening and extends outwardly from the inner end of the pipe insertportion to the surrounding wall of said opening and provides within thethreaded end of said opening an annular gasket cavity the surroundingouter margin of which conforms to the contour of the pipe and withinwhich cavity the gasket is receivable and compressible against the wallof the pipe in the pipe receiver seat, said enlargement of the pipeinsert member being provided with external threads engaged with theaforesaid internal threads of the holder opening to provide adjustmentof said pipe insert member toward the pipe in the pipe receiver seat tocompress the gasket between said gasket seat and the pipe and in saidcavity.

3. The combination of a spray nozzle assembly having a holder which hasan opening therethrough and is provided with a pipe receiver, a part atleast of which constitutes an outwardly facing seat of concave crosssection extending crosswise of said opening at one end thereof, a roundpipe detachably secured in said seat and having a nozzle supply holethrough the side wall thereof at the end of and substantially in linewith the opening of the holder, a pipe insert member one end of whichprojects part way into said end of the opening and has the pipe insertportion thereof extending outwardly through said opening and terminatingat a distance therefrom and projecting through said nozzle supply holein the side wall of the pipe, said insert portion having a gasket ofcompressible sealing material therearound at the inner end thereof, anda spray tip member which discharges outwardly at the other end of saidopening, both of said members being supported by the holder and eachhaving a passageway therethrough substantially concentric with theopening and leading respectively into the interior of the spray nozzleassembly and intercommunicating therein with one another, the portion ofsaid holder around that end of the opening from which the pipe insertportion of the pipe insert member projects being of a contourcorresponding to the rounded cross section of the pipe to provide saidopening with a correspondingly contoured margin at that end, and saidpipe insert portion having an annular at one end thereof with a pipereceiver a part at least of which constitutes an outwardly facingconcave seat which conforms to the external contour of the pipe and hasthe pipe secured sidewise therein, said barrel having an opening whichextends therethrough from end to end and has one end thereof internallythreaded and opening into the bottom of said seat and marginallycontoured to correspond to the rounded cross section of the pipe in theseat, a centrally apertured gasket of compressible sealing material insaid marginally contoured threaded end of the opening, a pipe insertmember one end of which projects part way into the internally threadedend of said opening and ha threaded engagement with the internal threadsof said opening and has the pipe insert portion of the pipe insertmember inset centrally from the margin thereof and extending therefromoutwardly through the central aperture of the gasket and through theinternally threaded end of the opening and through a hole in the side ofthe pipe and terminating at a distance from the internally threaded endof the opening, and of substantially cylindrical form, said pipe insertmember being remote from and operatively accessible through the oppositeend of said opening to compress the gasket in the opening and againstthe Pipe, and a spray tip member which is spaced from said pipe insertmember and removably secured to the holder and closes said opposite endof the opening and through which spray is discharged from the nozzleassembly, each of said members having a passageway therethroughsubstantially concentric with said holder opening and leadingrespectively into the portion of said opening between said members, anda screen in said opening and interposed between said members.

FRED W. WAHLIN.

REFERENCES CITED The following references are of record in the file ofthis patent:

UNITED STATES PATENTS

